Uninterruptable power supply



FIG. 1 is a perspective view of an uninterruptable power supply showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front end view thereof; and,

FIG. 7 is a rear end view thereof.

The broken lines showing are for illustrative purposes and form no part of the claimed design.

The broken line(s) which define the bounds of the claimed design form no part thereof. 

The ornamental design for an uninterruptable power supply, as shown and described. 